FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (5): 98-101.doi: 10.7506/spkx1002-6630-201205022

• Basic Research • Previous Articles     Next Articles

Electron Paramagnetic Resonance Spectroscopy (EPR) Study of Soybean Protein Isolates Prepared by Different Processing Methods

HUANG You-ru,CHEN Yi-yong,ZHU Dong-xing,ZHAO Yang,WANG Tan-yu   

  1. School of Biological Science and Food Engineering, Changshu Institute of Technology, Changshu 215500, China
  • Online:2012-03-15 Published:2012-03-03

Abstract: Soybean protein isolates were prepared by different methods and comparatively analyzed by electron paramagnetic resonance (EPR) spectroscopy. The results showed that soybean protein isolates obtained by different methods were different in central singlet signal attributed to the carbon radical (g value ranged between 2.0051 and 2.0054). The central free radical signal of soybean protein isolates could be weakened by decreasing extraction temperature, reducing lipid contents of defatted soybean flakes or inactivating lipoxygenase activity.

Key words: soybean protein isolates, electron paramagnetic resonance(EPR), free radicals

CLC Number: